| 基于十四面体模型的闭孔泡沫材料弹性性能的有限元分析 |
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| 引用本文： | 张家雷,卢子兴. 基于十四面体模型的闭孔泡沫材料弹性性能的有限元分析[J]. 机械强度, 2007, 29(2): 315-319 |
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| 作者姓名： | 张家雷 卢子兴 |
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| 作者单位： | 北京航空航天大学,固体力学研究所,北京,100083 |
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| 基金项目： | 国家自然科学基金 , 北京市教委共建项目 |
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| 摘 要： | 建立十四面体的单胞模型和多胞模型,采用有限元方法和周期性边界条件,研究胞体数目和相对密度对闭孔泡沫模型弹性性能的影响.同时,确定闭孔泡沫胞体在两种变形状态下的应力分布.文中还将数值结果与理论预测以及随机泡沫模型的计算结果进行比较.结果表明,十四面体模型可以较好地预测低密度闭孔泡沫的弹性性能.
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| 关 键 词： | 十四面体模型 闭孔泡沫 弹性性能 有限元 微结构 十四面体模型 闭孔 泡沫材料 弹性性能 有限元分析 MODEL TETRAKAIDECAHEDRON BASED FOAMS ELASTIC PROPERTIES ELEMENT ANALYSIS 低密度 理论预测 比较 数值结果 计算 随机 应力分布 变形状态 影响 |
| 修稿时间： | 2006-01-052006-03-13 |
FINITE ELEMENT ANALYSIS FOR THE ELASTIC PROPERTIES OF CLOSED-CELL FOAMS BASED ON A TETRAKAIDECAHEDRON MODEL |
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| ZHANG JiaLei,LU ZiXing. FINITE ELEMENT ANALYSIS FOR THE ELASTIC PROPERTIES OF CLOSED-CELL FOAMS BASED ON A TETRAKAIDECAHEDRON MODEL[J]. Journal of Mechanical Strength, 2007, 29(2): 315-319 |
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| Authors: | ZHANG JiaLei LU ZiXing |
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| Affiliation: | Institute of Solid Mechanics, Beijing University of Aeronautics and Astronautics, Beijing 100083, China |
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| Abstract: | The tetrakaidecahedral unite cell model and multi-cellular mode are set up.Effects of the number of cells and relative density on the elastic properties of closed-cell foam model are investigated by the finite element method and periodic boundary conditions.At the same time,the stress distribution state of cell under two kinds of deformation state is determined.Numerical results are compared with the theoretical prediction and the results of the random foam model.It's found that the tetrakaidecahedral model can predict the elastic properties of the closed-cell foam quite well. |
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| Keywords: | Tetrakaidecahedral modd Closed-cell foam Elastic properties Finite elements method Microstructure |
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